We're dividing 21527 by 84 
The aim is to understand the frequency of 84 in 21527.

Going ahead to step 1:
The number 84 fits into 2 0 times, leaving a remainder of 2.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 2 and we're left with 2.
Grab the next digit (1) from the dividend, add it to 2, then carry on: 21 / 84

Moving on to step 2:
When dividing 21 by 84, we get 0 with a remainder of 21.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 21 leaves us with 21.
Grab the next digit (5) from the dividend, add it to 21, then carry on: 215 / 84

Let's proceed to step 3:
If we divide 215 by 84, we get 2 and a remainder of 47.
The number 2 becomes the next digit in our result. 
Result so far: 2.0
The remainder is 47 after subtracting 168 from 215.
Take the next digit (2) from the dividend and append it to 47, then repeat: 472 / 84

Let's proceed to step 4:
472 divided by 84 is 5 with a remainder of 52.
Use 5 as the next digit of our solution. 
Result so far: 25.0
The remainder is 52 after subtracting 420 from 472.
Include the next digit (7) from the dividend after 52, then repeat: 527 / 84

On to step 5:
84 goes into 527 6 times with a remainder of 23.
Put 6 as the next digit of the answer. 
Result so far: 256.0
Deduct 504 from 527 and we're left with 23.
Since there are no more digits in the dividend, we add a zero to the remainder making it 230, and continue the process.

On to step 6:
230 divided by 84 is 2 with a remainder of 62.
Put 2 as the next digit of the answer. 
Result so far: 256.2
The remainder is 62 after subtracting 168 from 230.
Since there are no more digits in the dividend, we add a zero to the remainder making it 620, and continue the process.

Step 7:
If we divide 620 by 84, we get 7 and a remainder of 32.
The number 7 becomes the next digit in our result. 
Result so far: 256.27
Subtract 588 from 620 to get 32.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

Let's proceed to step 8:
320 divided by 84 is 3 with a remainder of 68.
Write down 3 as next digit of the result. 
Result so far: 256.273
Subtract 252 from 320 to get 68.
Since there are no more digits in the dividend, we add a zero to the remainder making it 680, and continue the process.

Step 9:
The number 84 fits into 680 8 times, leaving a remainder of 8.
The next digit of our result is 8. 
Result so far: 256.2738
The remainder is 8 after subtracting 672 from 680.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

On to step 10:
84 can be fit into 80 0 times, resulting in a remainder of 80.
Record the quotient 0 as the next digit in the result. 
Result so far: 256.2738
Deduct 0 from 80 and we're left with 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 800, and continue the process.

On to step 11:
84 can be fit into 800 9 times, resulting in a remainder of 44.
Put 9 as the next digit of the answer. 
Result so far: 256.273809
Subtracting 756 from 800 leaves us with 44.
Since there are no more digits in the dividend, we add a zero to the remainder making it 440, and continue the process.

Step 12:
When dividing 440 by 84, we get 5 with a remainder of 20.
Use 5 as the next digit of our solution. 
Result so far: 256.2738095
If we take 420 away from 440, we end up with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Let's proceed to step 13:
84 can be fit into 200 2 times, resulting in a remainder of 32.
Write down 2 as next digit of the result. 
Result so far: 256.27380952
Subtract 168 from 200 to get 32.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

In conclusion, the division gives 256.27380952 with a balance of 3.2e-08.